package cn.tb.ymcc.service.impl;

import cn.tb.ymcc.domain.AlipayInfo;
import cn.tb.ymcc.domain.PayOrder;
import cn.tb.ymcc.dto.AlipayNotifyDto;
import cn.tb.ymcc.dto.KillPreOrderParamsDto;
import cn.tb.ymcc.dto.PayApplyDto;
import cn.tb.ymcc.dto.PayNotifyDto;
import cn.tb.ymcc.exception.GlobleException;
import cn.tb.ymcc.mapper.PayOrderMapper;
import cn.tb.ymcc.service.IAlipayInfoService;
import cn.tb.ymcc.service.IPayOrderService;
import cn.tb.ymcc.util.AssertUtil;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alipay.easysdk.factory.Factory;
import com.alipay.easysdk.kernel.Config;
import com.alipay.easysdk.kernel.util.ResponseChecker;
import com.alipay.easysdk.payment.common.models.AlipayTradeCloseResponse;
import com.alipay.easysdk.payment.common.models.AlipayTradeRefundResponse;
import com.alipay.easysdk.payment.page.Client;
import com.alipay.easysdk.payment.page.models.AlipayTradePagePayResponse;
import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.baomidou.mybatisplus.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.apache.rocketmq.client.producer.LocalTransactionState;
import org.apache.rocketmq.client.producer.SendStatus;
import org.apache.rocketmq.client.producer.TransactionSendResult;
import org.apache.rocketmq.spring.core.RocketMQTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.messaging.Message;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.Date;
import java.util.Map;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author tangbo
 * @since 2022-07-30
 */
@Service
@Slf4j
public class PayOrderServiceImpl extends ServiceImpl<PayOrderMapper, PayOrder> implements IPayOrderService {
    @Autowired
    private IAlipayInfoService alipayInfoService;
    @Autowired
    private RocketMQTemplate rocketMQTemplate;
    @Autowired
    private RedisTemplate<Object,Object> redisTemplate;

    /**
     * 检查支付单是否已经生成
     * @param orderNo
     * @return
     */
    @Override
    public PayOrder selectByOrderNo(String orderNo) {
        EntityWrapper<PayOrder> wrapper = new EntityWrapper<>();
        wrapper.eq("order_no",orderNo);
        return selectOne(wrapper);
    }

    /**
     * 发起支付申请，返回form表单
     * 1.校验参数 jsr303
     * 2.业务校验 根据订单号查询支付单
     *  2.1 判断支付状态是否为待支付
     *  2.2支付方式
     * 3.触发支付
     * 4.返回支付宝返回的响应结果
     * @param dto
     * @return
     */
    @Override
    public String apply(PayApplyDto dto) {
        PayOrder payOrder = selectByOrderNo(dto.getOrderNo());
        AssertUtil.isNotNull(payOrder,"支付单不存在！");
        boolean waitPay = payOrder.getPayStatus() == PayOrder.STATE_WAIT_PAY;
        AssertUtil.isTrue(waitPay,"支付单状态不是待支付");
        //支付宝支付
        if(dto.getPayType() == 1){
            return alipay(payOrder,dto);
        }
        return null;
    }

    /**
     * 调用支付宝支付，返回Form表单
     * @return
     * @throws Exception
     */
    public String alipay(PayOrder payOrder,PayApplyDto dto){
        //AlipayInfo info = alipayInfoService.selectOne(null);
        AlipayInfo info = alipayInfoService.selectById(2);
        // 1. 设置参数（全局只需设置一次）
        Factory.setOptions(getOptions(info));
        try {
            // 2. 网页端支付
            Client page = Factory.Payment.Page();
            //封装支付相关参数，发起支付
            AlipayTradePagePayResponse response = page.pay(
                    payOrder.getSubject(),
                    payOrder.getOrderNo(),
                    payOrder.getAmount().toString(),
                    StringUtils.isEmpty(dto.getCallUrl())?info.getReturnUrl():dto.getCallUrl()//同步回调地址
            );
            // 3. 处理响应或异常
            if (ResponseChecker.success(response)) {
                System.out.println("调用成功");
                return response.getBody();//Form表单
            } else {
                System.err.println("调用失败，原因：");
                throw new GlobleException("支付调用失败！！！");
            }
        } catch (Exception e) {
            System.err.println("调用遭遇异常，原因：" + e.getMessage());
            throw new RuntimeException(e.getMessage(), e);
        }
    }

    public Config getOptions(AlipayInfo info) {
        Config config = new Config();
        config.protocol = info.getProtocol();
        config.gatewayHost = info.getGatewayHost();//沙箱API地址
        config.signType = info.getSignType();
        config.appId = info.getAppId();
        // 为避免私钥随源码泄露，推荐从文件中读取私钥字符串而不是写入源码中
        config.merchantPrivateKey = info.getMerchantPrivateKey();
        //注：如果采用非证书模式，则无需赋值上面的三个证书路径，改为赋值如下的支付宝公钥字符串即可
        config.alipayPublicKey = info.getAlipayPublicKey();
        //可设置异步通知接收服务地址（可选）
        config.notifyUrl = info.getNotifyUrl();
        //可设置AES密钥，调用AES加解密相关接口时需要（可选）
        config.encryptKey = "";
        return config;
    }

    /**
     * 支付成功之后，支付宝异步回调处理
     * @param dto
     * @return
     */
    @Override
    public String alipayNotify(AlipayNotifyDto dto) throws Exception{
        String jsonString = JSON.toJSONString(dto);
        Map<String,String> dtoMap = JSONObject.parseObject(jsonString, Map.class);
        //接收到的所有参数放入一个Map中
        Boolean isValid = Factory.Payment.Common().verifyNotify(dtoMap);
        if(!isValid){
            return "Fail";
        }
        //校验订单是否是我们发送的订单
        PayOrder payOrder = selectByOrderNo(dto.getOut_trade_no());
        if(payOrder==null){
            return "Fail";
        }
        //如果支付单已经被取消，但是支付宝支付成功的消息回来了
        if(payOrder.getPayStatus() == PayOrder.STATE_CANCEL){
            try {
                log.info("调用支付宝退款！！");
                //调用退款
                AlipayTradeRefundResponse refund = Factory.Payment.Common().refund(payOrder.getOrderNo(), payOrder.getAmount().toString());
            } catch (Exception e) {
                e.printStackTrace();
                /**
                 * 做兜底
                 * 2.保存要取消支付单的记录到数据库，运维人员来人工跟进
                 * 3.给运维人员发站内信，邮件，消息
                 */
            }
            return "success";
        }
        //校验支付单状态
        if(payOrder.getPayStatus() != PayOrder.STATE_WAIT_PAY){
            return "Fail";
        }
        //校验支付状态
        if(!dto.getTrade_status().equals(AlipayNotifyDto.TRADE_SUCCESS)){
            return "Fail";
        }
        //处理支付成功后的逻辑
        //修改支付单状态
        payOrder.setPayStatus(PayOrder.STATE_PAY_SUCCESS);
        payOrder.setUpdateTime(new Date());
        //修改应该是通过事务监听器，在里面执行本地事务
        //updateById(payOrder);

        //发布事务消息，字段：订单号,购买人,课程id
        log.info("发送支付成功通知事务消息");
        PayNotifyDto notifyDto = new PayNotifyDto(payOrder.getOrderNo(),payOrder.getExtParams());
        //构建消息体
        Message<String> message = MessageBuilder.withPayload(JSON.toJSONString(notifyDto)).build();
        TransactionSendResult transactionSendResult = rocketMQTemplate.sendMessageInTransaction(
                "service-pay-tx-group",
                "pay-notify-topic:pay-notify-tag",
                //消息体
                message,
                //额外参数
                payOrder
        );
        //发行消息后的事务状态检查
        log.info("发送完事务消息--检查事务消息状态");
        LocalTransactionState localTransactionState = transactionSendResult.getLocalTransactionState();
        SendStatus sendStatus = transactionSendResult.getSendStatus();
        if(localTransactionState != LocalTransactionState.COMMIT_MESSAGE || sendStatus != SendStatus.SEND_OK ){
            log.info("校验发送事务消息状态异常");
            throw new GlobleException("处理支付成功结果失败！");
        }

        //支付成功之后还要删除Redis中的预创订单 @TODO
        //KillPreOrderParamsDto preOrder = (KillPreOrderParamsDto)redisTemplate.opsForValue().get(dto.getOut_trade_no());
        redisTemplate.delete(dto.getOut_trade_no());




        //2.修改订单状态
        //3.添加用户的课程购买记录
        return "success";
    }

    /**
     * 支付超时取消支付单
     * 1.取消支付单
     * 2.调用支付宝，关闭支付
     *   。在登录页面，是可以关闭交易的
     *   。如果到了支付页面，输入了支付密码，点击支付之后，那么关闭不了
     *   --- 降级方案，在支付宝的异步通知中：走退款逻辑
     * @param orderNo
     */
    @Override
    public void cancelOrder(String orderNo) {
        PayOrder payOrder = selectByOrderNo(orderNo);
        //取消支付单
        if(payOrder.getPayStatus().intValue() == PayOrder.STATE_WAIT_PAY){
            payOrder.setPayStatus(PayOrder.STATE_CANCEL);
            updateById(payOrder);
        }
        //调用支付宝，关闭支付
        try {
            AlipayTradeCloseResponse close = Factory.Payment.Common().close(orderNo);
        } catch (Exception e) {
            e.printStackTrace();
            /**
             * 做兜底
             * 1.重试3次
             * 2.保存要取消支付单的记录到数据库
             * 3.给运维人员发站内信，邮件，消息
             */
        }

    }
}
